939930 has 64 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 221184.

The previous prime is 939923. The next prime is 939931. The reversal of 939930 is 39939.

939930 = T₃₀₅ + T₃₀₆ + ... + T₃₂₃.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 939891 and 939900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939931) by changing a digit.

939930 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9642 + ... + 9738.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2⁹³⁹⁹³⁰ is an apocalyptic number.

It is a pronic number, being equal to 969×970.

It is a practical number, because each smaller number is the sum of distinct divisors of 939930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080).

939930 is an abundant number, since it is smaller than the sum of its proper divisors (1600230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

939930 is a wasteful number, since it uses less digits than its factorization.

939930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143.

The product of its (nonzero) digits is 6561, while the sum is 33.

The square root of 939930 is about 969.4998710676. The cubic root of 939930 is about 97.9561792145.

The spelling of 939930 in words is "nine hundred thirty-nine thousand, nine hundred thirty".